Horizontally-pivoted window.



No. 787,378. PATENTED APR. 18, 1905.

H. B. HITESHEW.

HORIZONTALLY PIVOTED WINDOW.

APPLICATION FILED JUNE 28.1904.

WITNESSES 7 4 a INVENTOR 91. M. J "amm,

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Patented April 18, 1905.

ATENT @FFICE.

HARVEY B. HlTESHElV, OF PITTSBURG, PENNSYLVANIA.

HORlZONTALLY-PIVOTED WINDOW.

SPECIFICATION forming part of Letters Patent No. 787,378, dated April18, 1905.

Application filed June 28, 1904. Serial No. 214,454.

Be it known that l, Haavnv B. Hrrnsumv, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement inI'lorizontally-Pivoted 'indows, of which the following is aspecification.

The invention relates to windows having the sash horizontally pivoted tostrips on each side, which strips are adapted to be separated laterallyfrom the sash and to travel longitudinally in the grooves of thewimlow-t'rame; and the object of the improvement is to provide a pivotalconnection which will permit a free lateral movement of the strips, witha tapered journal which can be tightened by endwise movement in asimilar bearing to retard the rotation of the sash, by means of whichthe sash can be held in any position of rotation. This object isattained by the construction, mechanism, and arrangement illustrated inthe accompanying drawings, in which- Figure 1 is a fragmentary side Viewof a window frame and sash, showing the pivotal connection inlongitudinal section; Fig. 2, an enlarged crosssection of the frame andsash on line 2 2, Fig. 1; Fig. 3, an enlarged longitudinal section ofthe pivot parts in the strip with the sash rotated to show across-section of the pivot parts therein; Fig. 4, a detached perspectiveview of the sash-plate; Fig. 5, a detached perspective view of thestrip-plate; Fig. 6, a detached perspective view of the pivot with thekey-pin opposite its aperture, and Fig. 7 a detached perspective view ofthe spiral spring and washer in relative position for assembling.

Similar numerals refer to similar parts throughout the drawings.

The window-frame 1 is made in the usual manner with a groove 2 on eachside for receiving the respective sash-strips. The sash 3 is made lessin width than the inside clear width of the frame, and the usual strips1 are pivoted on the side edges of the sash and are adapted to operatein the respectivei'ramegrooves. The adjoining faces of the sash edge andside strip are provided with the ridges 5 and 6, having inclined sldesand arranged so that when the sash and strip are alined and broughttogether the ridges of the one will enter and lit in the grooves betweenthe ridges of the other, as shown particularly in Fig. 2, and when thesash is rotated on the strips the ridges are forced out of the groovesand bear against the crests of the opposing ridges, thus separating thestrips from the sash according to the depth of the ridges, as shown inFig. 2). To meet these conditions, the pivotal connection must providefor the lateral movement of the strips as well as for the rotation ofthe sash. Each pivotal connection is composed of the sash-plate T, thestrip-plate 8, the pivot 9, the key-pin 10, the spiral spring 11, andthe washer 12 and is preferably located in the transverse axis of thesash. The sash-plate T is countersunk in the side edge of the sash,where it is attached, as by the screws 13. The face of the sashplate isridged like the edge of the sash, and in the plate is provided the axialaperture 1 1, the inner part 15 of which has an angular cross-section.The strip-plate 8 is countersunk, preferably in the sash side of thestrip, where it is attached, as by the screws 16, and when so located isprovided with the hub 17, which extends into the body of the strip. Thepivot-bearing 18 is formed in the hub and is tapered from an enlargedaperture at the inner end to a slightly smaller aperture at the face ofthe plate, and the face of the plate is ridged like the side of thestrip. The pivot 9 is provided with the head 19 on one end, which istapered like the bearing 18, in which it is adapted to rotate and tomove endwise therein as 'far as its tapered shape will permit, and withthe angular inner end 20 similar in cross-section to the inner end ofthe axial aperture i in which it is adapted to operate end wise, but notto rotate. \Vhen these parts arcassemblcd, the spiral spring 11 and thewasher 12 are respectively placed around the inner end of thepivotagainst the inner side of the sash-plate, where they are held bythe key-pin 10, which is inserted in the transverse aperture 21 near theinner end of the pivot. The parts are so proportioned that the spiralspring is compressed between the sash-plate and the washer and key-pin,

by means of which the strip and sash are IJO pressed together betweenthe pivot-head on the one end and the spiral spring on the other end ofthe pivot, and the strip is adapted to be separated from the sash by anendwise movement of the pivot in the axial aperture of the sash-plateand by a further compression of the spiral spring, which separation isnecessary when the sash is rotated on the strips. The action of thespring always tends to draw the tapered pivot-head as a wedge into thesimilarly-tapered pivot-bearing, so that no looseness is ever possiblein the pivotal connection. This wedge efiect increases the friction ofthe pivot against the bearing and acts to retard its rotation therein.The normal energy of the spring is adjusted so that this retardationdoes not affect the free rotation of the pivot when the strips arealined with and closed against the edges of the sash; but when thestrips are separated from the sash by the rotation of the latter theendwise movement of the pivot in the sash causes such a furthercompression of the spring that its increased action draws the taperedpivot-head into the similarly-tapered bearing so tightly that therotation of the pivot is retarded to the extent of holding it in a givenplace as against a very positive force or pressure applied to rotate it.

V hat I claim as my invention, and desire to secure by Letters Patent,is-

1. A window-sash and a separable strip on its side edge, there beingcorresponding grooves and ridges on the adjoining faces, and a pivotalconnection between the sash and the strip comprising a pivot having anendwisemovable non-rotatable bearing in the one and a rotatable taperedbearing in the other, and a spring acting to draw the sash and the striptogether and to draw the pivot into the tapered bearing.

2. A pivotal connection for a window-sash and a separable stripcomprising a pivot having an endwise-movable non-rotatable hearing inthe one and a rotatable tapered bearing in the other, and a springacting to draw the sash and the strip together and to draw the pivotinto the tapered bearing.

3. A pivotal connection for a window-sash and a separable stripcomprising plates having an axial aperture in the one and a taperedbearingin the other, a non-rotatable endwisemovable pivot in theaperture having an inwardly-tapered head in the bearing,and means fordrawing the head into the bearing.

4. In a pivotal connection for a wind ow-sash and a separable strip, apivot having an enclwise-movable non-rotatable bearing in the one and arotatable tapered bearing in the other, and aspring acting to draw thepivot into the tapered bearing.

5. In apivotal connection for a window-sash and a separable strip, apivot having an endwise-movable non-rotatable bearing in the one and arotatable tapered bearing in the other, and means for moving the pivotinto the tapered bearing.

In testimony whereof I have hereunto signed my name to thisspecification in the presence of two subscribing Witnesses.

HARVEY B. HITESHEVV.

\Vitnesses:

JOHN FINK, J. WV. FINK.

